RESULTSA total of 15 species were recorded in thearea sampled (Tab. 1), but only 4 species,Tipula (Vestiplex) excisa, T. (V.) montana, T.(Savtshenkia) subnodicornis and T. (Pterelachisus)middendorffi were collected in themiddle alpine zone (Tab. 2) which is above1400 m a.s.l. Low numbers of specimenswere collected in this zone, but T. (V.) exisaand T. (P.) middendorffi are certainly trueinhabitants of this zone. Eleven species werefound in the low alpine zone (which is betweenabout 1100 and 1400 m a.s.l.), and allspecies caught in the middle alpine zone appearedhere. Additionally, the following speciesoccurred: T. (S.) invenusta, T. (S.) gimmerthaU,T. (Platytipula) melanoceros, T.(Arctotipula) saUcetorum, Nephrotoma lundbecki,T. (V.) laccata, and Prinocera subserricornis.Dominant species in the collectionswere T. (V.) excisa, T. (S.) gimmerthaU, T.(S.) invenusta and T. (A.) saUcetorum.In the subalpine zone ten species were collected.Five species, T. (V.) montana, T. (P.)middendorffi, T. (A.) saUcetorum, T. (V.)laccata and P. subserricornis, recorded in thealpine zone were not recorded in the subal-pine zone. Species only recorded in the subalpinezone were T. (S.) pagana, T. (s.) grisescensand T. (V.) nubeculosa. Abundantantspecies in the subalpine collections were T.(s.) gimmerthaU, T. (S.) in venusta and T. (P.)melanoceros. The tipulids were flying fromearly June to October (Tab. 3). In the Dovrefjellarea June belong to spring/early summer,July-August is summer and September-Octoberis autumn. Spring species areT. (V.) nubeculosa, T. (S.) subnodicornis, T.(S.) pagana, and T. (S.) grisescens. Summerspecies are T. (A.) saUcetorum, T. (V.) excisa,T. (V.) montana, T. (V.) laccata, N. lundbecki,T. (P.) middendorffi and P. subserricornis.Autumn species are T. (S.) gimmerthali,T. (S.) invenusta and T. (S.) Umbata. T.(P.) melanoceros seems intermediate betweensummer and autumn species.DISCUSSIONThe flight periods of the species of Tipulidaein the Dovrefjell mountains are in accordancewith those reported from two localitiesin Northern Sweden, the Messaure area, LuleLappmark (Tjeder 1974), and the AbiskoTable.).f'll(jht tlcrJ.ods of Ti!-Jull.dae (DlpteraJ l.n thep'ld.les col1{.cct;>d Hj wel::'kly interval~ in Malal.seDovref)ell mountains beG to 1'j8J shown dS number oftrapsJuneJuly" 10 2J JO 7 14 n 28Tl.lJuld (A.rctu'tlpuld) ~,dlicetorum 2 2jAug4 11 18 25SelJL1 8 15 22 2"Gct0 1.;'J'l.fuld (Ve5t lIJlex) eXCl.sa j 12 ,,2 10" 2j 20 141 (V.) ITIontanaT. (v.) IdccatdT. (V.) mlbl::'culosaTl.lJuL:1 (Sd.vt~hl::'nkl.a) gl.ITUnet"thall. 2 10 48 102 42 5 S8 24T. (S.) l.nVenustd 1 12 .,:>3 57 joT. (S.l I1mbdtoT. (5.) SUbllOdl.cortJis 5 27 10T. (S.) paganaT. (S.) grisescensTipula (Flatycl.pula) rneld.noceros j 14Tl.pula (Pterelach1.~us) middendorffiNephrot.oma lundbeckl.Prl.nocera subserrl.comis54
area, Torne Lappmark (Tjeder 1978). ExceptT. (S.) pagana and T. (P.) middendorffi thespecies found at Dovrefjell were includedalso in the Swedish investigations mentionedabove. T. (V.) excisa, T. (S.) invenusta, T.(S.) subnodicornis and T. (S.) grisescens hadnearly similar flight periods at Dovrefjellmountains and the low/middle alpine zone atFinse in the northern part of Hardangervidda,South Norway (Hofsvang 1974).Therefore, in the Scandinavian mountainsfrom Hardangervidda, South Norway to Abisko,Torne Lappmark, the flight periods ofthe tipulid species do not deviate much.The species of Tipulidae reported in thepresent study are found within the previouslyknown distribution area in Norway except T.(S.) pagana. T. (P.) middendorffi and N.lundbecki. T. pagana was earlier only knownfrom the Oslo area in Norway, but is recordednorth to Angermanland in Sweden (Tjeder1955). T. (P.) middendorffi a boreal speciesand previously known from USSR east ofArkhangelsk (Theowald 1980), is reportednew to Fennoscandia. N. lundbecki was earlierreported from North Norway (Mannheims1951).Of the 15 species collected from the Dovrefjellmountains, six species, T. (V.) excisa, T.(V.) montana, T. (S.) gimmerthali, T. (S.)limbata, T. (S.) subnodicornis and T. (S.)grisescens, show a boreoalpine disjunct distribution(Theowald & Oosterbroek 1985),which means that they are recorded in thecontinental European Alps and in the Scandinavianmountains. Five species have a borealdistribution, T. (A.) salicetorum, T. (V.)laccata, T. (S.) invenusta, T. (P.) middendorffiand N. lundbecki. With the exceptionof T. (S.) in venusta, these boreal species belongto a group of species with a mainly easternPalaearctic distribution (Theowald &Oosterbroek 1985). T. (V.) nubeculosa, T.(S.) pagana, T. (P.) melanoceros and P. subserricornisare distributed in Northern Europe,but they are also a part of the tipulidfauna of the deciduous forests of the westernand middle part of the European lowland(Theowald & Oosterbroek 1983).Considering the number of specimenscaught during 1980 to 19835 species, T. (A.)salicetorum, T. (V.) excisa, T. (S.) gimmerthali,T. (S.) in venusta and T. (S.) subnodicornismay be regarded as common of fairlycommon in the Dovrefjell National Park. Allof these common species, except T. (A.) salicetorum,were found in more than half of thenumber of localities sampled. T. (A.) salicetorumoccurred in two traps only, at Kallvellaand Stropla, and may set strong requirementsto the habitat, but be locally abundant.Six species, T. (V.) laccata, T. (V.) nubeculosa,T. (S.) pagana, T. (S.) grisescens, N.lundbecki and P. subserricornis must be regardedas rare in Dovrefjell National Parkbecause they were only recorded at one localityand with one individual only. T. (A.)salicetorum and T. (P.) middendorffi werecollected at two sites and on the western sideonly. The collections indicate that they havea restricted distribution in the area. T. (V.)montana was caught at the 4 highest collectingsites only. T. (S.) gimmerthali, T. (S.)limbata and T. (P.) melanoceros were recordedup to about 1200 m a.s.l. From tab. 2 itmay look like that they are distributed onlyon the eastern side of the valley. This may bean artefact because ofthe collecting sites chosen.However, it is known from caddis-flies(Trichoptera) that great differences in speciescomposition occur between the eastern andwestern side of River Driva (Solem 1985).The caddisfly Apatania muliebris McLachlanwas dominant in the streams Blesbekken andRaubekken on the eastern side, but only scatteredindividuals were found on the westernside. The differences found in geology, plantspecies and pH values between the eastern(range 7.3 to 7.9) and the western side (range6.0 to 6.8) of the valley, may be reflected alsoin the species composition ofthe tipulids, butthe present study does not give conclusiveanswears to this.T. (V.) excisa on the other hand, was commonat all sites and all hight levels in thealpine zone on the eastern and the westernside of the valley, and live in habitats rich inorganic matter and in the present study havepH values between 6.0 to 7.9 T. (S.) invenustashowed a similar range in habitat preferencesas T. (V.) excisa. Most tipulid larvaeare detrital feeders (Byers 1984) and theirecological importance must be substantial inalpine areas. However, since tipulid larvaeand adults are relatively large insects theirecological importance as food for other invertebrates,birds and mammals is probablyeven greater.55
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No. 11987SER. B VOL. 34NO. 1Norwegi
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Professor Ole A. Srether 50 yearsFo
- Page 5 and 6: senting and systemising these chara
- Page 7 and 8: Raddum, G. & O. A. Sa:ther 1981. Ch
- Page 9 and 10: Contribution to the knowledge of th
- Page 11: dia is the type locality, Livonia,
- Page 14 and 15: Sverre Kobro, Carl Fredrik Liihr, R
- Page 16 and 17: -.Occurrence and life cycle of Dino
- Page 18 and 19: width of 1 2 3 4pronotum n: 19 13 I
- Page 20 and 21: LITTERAT.UREAubert, J. 1946. Les Pl
- Page 22 and 23: Fig. 1. Brachycaudus (Acaudus) popu
- Page 24: Nymphal development and food consum
- Page 27 and 28: espectively. At 20°C, mean number
- Page 29 and 30: than P. mali. Upon examination of t
- Page 31 and 32: The first record of Thaumalea ve"al
- Page 33 and 34: Bibio nigriventris Haliday, 1833 (D
- Page 35 and 36: ker 1 ~ 27 June 1873 (ZMO 11293). P
- Page 37 and 38: Megamerina dolium (Fabricius, 1805)
- Page 39 and 40: New Norwegian Empididae (s.str.) (D
- Page 41 and 42: A,H. obscura MeigenRY, Rennes0Y: F0
- Page 43 and 44: Influence of temperature on the egg
- Page 45 and 46: · soo8 12 16 20 24Fig. 2. Day-degr
- Page 47: Distribution and seasonal abundance
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- Page 52 and 53: ut from a zoogeographical point of
- Page 55: Table I. Tipulidae species recorded
- Page 59 and 60: Twelve species of Neuropteroidea an
- Page 61 and 62: Table I. Number of specimens (males
- Page 63 and 64: etween summer and autumn. H. stigma
- Page 65: Distribution and seasonal abundance
- Page 68 and 69: Table I. Number of individuals of v
- Page 70 and 71: ,[Table 3. Relative abundance of th
- Page 72 and 73: ,(Table 6. Number ofspecies collect
- Page 74 and 75: there. This is a northern species,
- Page 76 and 77: denticulata, Onychiurus armatus (Tu
- Page 78 and 79: Kallvellsj0enStroplsj0enKongsvoll B
- Page 80 and 81: Faro. PsilidaeMaterial of Psilidae
- Page 82 and 83: The thrips fauna near Kongsvoll in
- Page 84 and 85: Table 1. Habitat/host plants for th
- Page 86 and 87: Table 1, continuesAltitude StageThr
- Page 88 and 89: Sericothrips abnormis (Karny, 1909)
- Page 90: collected from birch in Oslo, in Tr
- Page 93 and 94: Maltbrek, J. 1932. Frynsevinger. Da
- Page 95 and 96: --_..- ---~---'Aug. 1977, a male Ap
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